The Elder Scrolls V: Skyrim

When I startup Skyrim the launcher will go through a list of mods I have subscribed to and show them at the bottom of the launcher and far too often I will run into this problem:

"Downloading mod (whatever number it has gotten to) of 84: (insert mod name here)"

I have checked to see if there was something I had to do before I tried to run Skyrim and I figured it was because I didn't have DLC for some of the mods, but some generalized mod fixes like "SkyUI" crashed the loader as well. When I say crash, I mean after a short time a window will come up that says: "Failed to extract archive from ckm file!" It will then tell me that the Skyrim launcher has stopped working and closes the launcher. If anyone would be so kind as to tell me what this is and how I can remedy the problem I would be most grateful.